A 20-KVA, 20,000/480-V, 60-Hz distribution transformer is tested with the followingresults:Open-circuit testShort-circuit test(measured from secondary side)(measured from primary side)Vsc = 1130 VVoc=480 VIoc = 1.60 AIsc = 1.00 APoc = 305 WPsc = 260 WSketch the per-unit equivalent circuit of this transformer referred to the primary side

Given Parameters of a distribution transformer. We need to sketch the per equivalent circuit.…

A 20-KVA, 20,000/480-V, 60-Hz distribution transformer is tested with the following results: Open-circuit test Short-circuit test (measured from secondary side) Voc=480 V (measured from primary side) Vsc=1130 V loc = 1.60 A Isc = 1.00 A Poc = 305 W Psc = 260 W Sketch the per-unit equivalent circuit of this transformer referred to the primary side

A 20-KVA, 20,000/480-V, 60-Hz distribution transformer is tested with the following results: Open-circuit test Short-circuit test (measured from secondary side) Voc=480 V (measured from primary side) Vsc=1130 V loc = 1.60 A Isc = 1.00 A Poc = 305 W Psc = 260 W Sketch the per-unit equivalent circuit of this transformer referred to the primary side

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.14MCQ: The ideal transformer windings are eliminated from the per-unit equivalent circuit of a transformer....

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Concept explainers

Distribution System

The final stage in the delivery of the electric power is the electric power distribution system. From the transmission system to the individual customers it carries electricity. The distribution system is connected with the transmission system and is used to lower the voltage of the transmission to medium voltage in the range of 2 kV to 35 kV with the help of transformers. This medium voltage to the distribution transformers located near the customer's premises is carried by the primary distribution system lines. These distribution transformers in turn lower the voltage to utilization voltage used in lightings, household appliances, industrial equipments etc. Through secondary distribution lines often several customers are supplied from one transformer. It is through service drops, the commercial and residential customers are connected to the secondary distribution system lines. Customers who demand a larger amount of power can be connected directly to the primary distribution system level or the sub-transmission level.

Question

A 20-KVA, 20,000/480-V, 60-Hz distribution transformer is tested with the following
results:
Open-circuit test
Short-circuit test
(measured from secondary side)
(measured from primary side)
Vsc = 1130 V
Voc=480 V
Ioc = 1.60 A
Isc = 1.00 A
Poc = 305 W
Psc = 260 W
Sketch the per-unit equivalent circuit of this transformer referred to the primary side

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